Grashoff number is given by________________?
Correct answer: A. gD3.β.Δtρ2/μ2
- A. gD3.β.Δtρ2/μ2
- B. gD2βΔtρ/μ2
- C. gD2βΔtP2μ
- D. gD3βΔtP2/μ
Explanation
The Grashof number is Gr = gβΔTD³/ν². Since ν = μ/ρ, this becomes gD³βΔTρ²/μ², matching option a.
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